/*
 * Copyright 2017 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.guvnor.ala.marshalling.impl;

import java.io.IOException;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.guvnor.ala.marshalling.Marshaller;

/**
 * Base implementation for a JSON marshaller.
 */
public abstract class JSONBaseMarshaller<T>
        implements Marshaller<T> {

    protected ObjectMapper objectMapper = new ObjectMapper();

    protected final Class<T> type;

    public JSONBaseMarshaller(final Class<T> type) {
        this.type = type;
    }

    @Override
    public Class<T> getType() {
        return type;
    }

    @Override
    public String marshal(final T value) throws IOException {
        return objectMapper.writeValueAsString(value);
    }

    @Override
    public T unmarshal(final String marshalledValue) throws IOException {
        return objectMapper.readValue(marshalledValue,
                                      type);
    }
}